kobboi

(Warning: not as advanced a question as most below)

Hi!

When trying to get familiar with cosmology, I never get around the difference between "Big Bang" as a situation with matter in confined space and the expansion of space. Did matter "explode" into some pre-existing empty vessel? Or was the vessel infinitely small as well?

You are one of the few people I know who I trust to be able to say something very clear about this in five sentences.

Thanks!